RX4111CE Jump to Top / Bottom
ETM62E-02 Seiko Epson Corporation 35
14.4. Time Update Interrupt Function
14.4.1. Related Registers For Time Update Interrupt Functions.
Table 34 Time Update Interrupt Registers
time update interrupt
Although the time update interrupt function cannot be fully stopped, if 0 is written to the UIE bit, the time update interrupt
function can be prevented from changing the /INT pin status to low.
1) USEL bit (Update Interrupt Select)
This bit is used to select "second" update or "minute" update as the timing for generation of time update interrupt
events.
Table 35 USEL bit (Update Interrupt Select)
Selects "second update" (once per second) as the timing for generation of
interrupt events
Selects "minute update" (once per minute) as the timing for generation of
interrupt events
2) UF bit(Update Flag)
This flag bit value changes from 0 to 1 when a time update interrupt event occurs.
Table 36 UF bit (Update Flag)
When UF bit clears to 0, /INT output returns to Hi-Z immediately.
Invalid (writing a 1 will be ignored
Time update interrupt events are not detected.
Time update interrupt events are detected.
(The result is retained until this bit is cleared to zero.)
3) UIE bit(Update Interrupt Enable)
This bit selects whether to generate an interrupt signal or to not generate it.
Table 37 UIE bit (Update Interrupt Enable)
1) The interrupt signal due to time update is not output.
2) The time update interruption signal is immediately stopped.
Note. as for INT-pin, alarm, timer and time update interrupts are output as
OR.
To Next Page
Loading...
